| Error Message | Cause | Solution | |---------------|-------|----------| | ERROR: DMI region is locked. | BIOS write-protection is enabled. | Enter BIOS (F10) → Advanced → Security → → Disable. | | Chipset not supported. | Wrong tool version for your chipset. | Find a newer DMI tool (e.g., DMI640 for 8th-gen Intel). | | Not enough memory to run the tool. | DOS memory management issue. | Boot FreeDOS with HIMEM.SYS or use DMI236A /LOW | | USB not booting on HP laptop. | Secure Boot blocking legacy USB. | Disable Secure Boot in BIOS → Boot Options → Legacy Boot Enable (CSM). | | Write successful but no change after reboot. | CMOS battery drained or DMI area corrupted. | Replace CMOS battery, then run /CLR (clear) before rewriting. |
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You can even embed a configuration file ( DMI.DAT ) that the tool reads automatically if named correctly. | Error Message | Cause | Solution |